Portfolio



EETTED sTATEs PATENT OFFICE..

JAMES SHAW, OF PROVIDENCE, RHODE ISLAND.

PORTFOLIO.

Specification of Letters Patent No. 15,150, dated June 17, 1856.

T0 all whom t may concern:

Be it known that I, JAMES SHAW, of Providence, in the county of Providence and State of Rhode Island, have invented a new and improved portfolio in which musicsheets, maps, engravings, &c., may be secured successively in a substantial manner and be preserved equally as well as if they were bound in the usual mode; and I do hereby declare that the following is a full,

clear, and exactdescription of the same, reference being had to the annexed drawings, making a part of this specication, in which- Figure l, is a view of the inner side of my improvement in an open state. Fig. 2, is a longitudinal section of the roller of the same, a portion of the covers being shown; m, w, Fig. 3, shows the plane of section. Fig. 3, is a transverse section of the same, (y), (y), Fig. l, showing the plane of section. Fig. 4, is also a transverse section of the same, (e), (a), Fig. l, showing the plane of section.

Similar letters of reference indicate corresponding parts in the several figures.

A, A, represents the covers of the portfolio, which are connected together and constructed in the usual manner.

B, represents a roller, which may be constructed of wood. This roller is permanently attached to the back of the port-folio, or to the inner side of the leather, (a), or other material by which the covers, A, A, are connected. Ihe roller is equal in length to the covers, C, and has a longitudinal groove, (b), cut in its entire length. And also has grooves, (c), cut init circumferentially at equal distances apart. Three grooves, (c), are represented in Figs. l and 2, but more may be used if necessary. The longitudinal groove, (o), is cut in the roller near one of the covers, A.

In the grooves,

l c), metallic rings, (d), are fitted. These rings are not tted tightly in the grooves (c) ,-that is, at the outer or exposed side of the roller, as the grooves are wider and deeper than the thickness of the rings so that threads, (e), may pass around the rings, as shown clearly in Fig. 2. At the back part of the roller, however, where the leather, (a), is attached to it, the rings are iitted tightly in the grooves, (c), as shown in Fig. 3, and the rings are attached to the roller so that they cannot turn therein. The diameter of the roller, B, should of course vary with the thickness and length of the port-folio.

The music sheets, maps, engravings or other articles, designated by D, are secured within the port-folio, by passing a needle containing the thread or ne cord, (e), underneat-h the rings, (d) the needle being fitted in the groove, (b), so that it may pass underneath the rings, as shown in red, Fig. 2; the needle is then passed through the sheets so that the sheets will be ksecured to the several rings; the thread passing around the rings as shown clearly in Fig. 2. Single sheets are foldedA or a narrow strip is turned over at their back edges, so that they may be attached in the same way as double ones. l

I do not claim separately or in itself ccnsidered the roller, B; but

I claim- The roller, B, attached to the covers, C, C,

provided with the grooves, (b), (c), and

JAMES SHAW.

Witnesses:

ELLERY F. ALLEN, GEO. WHEATON, 2d. 

